Judging from what it says, it probably takes one question to figure out if you "Understand and use references", and perhaps two when it comes to know whether you're able to "Distinguish between valid / invalid native function names"

Anyway, you only have to answer correctly to 33 questions in order to get the certification...

I wouldn't trust the results of such an exam :-)

(In fact, I could even assume the person wouldn't have the necessary skills for a job if he/she had undertaken such an exam just to prove me something...)